JP5707838B2 - Packing box - Google Patents

Description

  The present invention relates to a packaging box.

  In general, packing boxes (packaging boxes) for packing objects to be packed such as mechanical products, electrical appliances, various parts, consumables, etc. are subjected to impact (external force) applied from the outside of the box to the objects to be packed contained in the containing space inside the box. The cushioning material for protecting from) is used between the inner wall of the packaging box and the packaged item. As such a packing box, the following are known, for example.

  For example, a corrugated cardboard cushion composed of a main body part that can form a U-shaped packaged article holding part and a body wound piece that is connected to both longitudinal ends of the main body part and bends toward the back side of the packaged article. There is a packaging box to be used by storing the material in the packaging box and bringing the upper edge and the lower edge of the projecting end edge of the shell wound piece into direct contact with the upper lid and bottom surface of the packaging box ( Patent Document 1). The cardboard cushioning material is manufactured by valley-folding and mountain-folding one blank punched out from a cardboard sheet at a required portion. And it is shown by patent document 1 that it can be made into the packaging box which has a buffer material which hold | maintains a to-be-packaged item in the state which gave sufficient buffering effect inside the packaging box, without using a polystyrene foam at all.

  In addition, a bottom case having a bottom flap and opening upward, an upper case combined by fitting an overlap portion positioned on the lower end side of the side portion inside the bottom flap of the bottom case, and an outer side A joint for connecting the bottom case and the upper case by penetrating from the side, and a cushioning material disposed so as to contact the inner surface of the side portion of the upper case, and the bottom flap is detachable from the joint. The overlap portion has a tongue piece that is bent inward by an insertion operation of the joint with respect to the through hole and plastically deforms, and the shock absorbing material enters the plastically deformed tongue piece There is a packaging box having a window (Patent Document 2). And in patent document 2, in the packing box which connects and uses a bottom case and an upper case, it is easy to remove the cushioning material at the time of unpacking, and when the upper case is lifted, the cushioning material is It has been shown that it can be prevented from falling.

JP 2000-247369 A JP 2007-176522 A

  The present invention is a packing box that is used in a state in which a cushioning material is fitted in the accommodation space of the article to be packaged in the box body, without compromising ease of fitting the cushioning material into the accommodation space of the box body. It is intended to provide a packaging box that can keep the cushioning material in the storage space of the box body when the container is taken out.

The packaging box of this invention (A1)
A polygonal bottom plate, a plurality of side plates rising from each side of the bottom plate, and a plurality of bent plates that are bent at the upper end edges of the side plates, respectively, and a packaged object is accommodated in a space surrounded by the bottom plate and the side plates. A box body used as a housing space;
The bottom surface of the same polygon as the bottom plate of the box body and a plurality of buffer side surfaces rising from the respective sides of the bottom surface part, and is fitted into the housing space of the box body to be placed in the box body and the housing space. A cushioning material present between the items to be packed;
A vent is formed in the bottom surface of the cushioning material,
The at least one bent plate of the box body is formed with a restraining portion having a portion that is bent into the accommodation space of the box body and faces away from the bottom plate of the box body,
When the cushioning material is fitted into the storage space of the box body, the cushioning side surface portion of the cushioning material that faces the restraining portion formed in the at least one bent portion; The to-be-restrained part which has the site | part which is located in the bottom-plate side of the said box main body and faces so that it may face | abut.

The packaging box of the invention (A2) is the packaging box of the invention A1,
The restraining portion is a tip portion of a portion of the bending plate that is bent into a housing space of the box body,
The restrained part is a structure part having a depressed shape or a projecting shape having a part facing the tip part of the bent plate.

The packaging box of the invention (A3) is the packaging box of the invention A2,
The depressed shaped restrained part is a through hole that penetrates the buffer side surface part of the cushioning material, and a part of the inner wall part of the through hole is formed as a part facing the tip part of the restrained part. It is what.

The packaging box of this invention (A4) is the packaging box of any of the inventions A1 to A3,
The cushioning material is a structure that is used in a state where the cushioning side surface portion is bent and raised at each side portion of the bottom surface portion, and
An anti-tilt piece for preventing the buffer side surface portion forming the restrained portion from tilting in a direction away from the stop portion, the buffer side surface portion, another buffer side surface portion of the buffer material adjacent to the buffer side surface portion, or It is formed on the bottom part.

The packaging box of this invention (A5) is the packaging box of any of the inventions A1 to A4,
A lid for closing the vent hole is provided.

The packaging box of the invention (A6) is the packaging box of the invention A5,
The lid is formed on the bottom surface of the cushioning material so as to be displaced by being pushed by an object to be packed when accommodated in the accommodating space of the box body and closing the vent hole.

The packaging box of this invention (A7)
A polygonal bottom plate, a plurality of side plates rising from each side of the bottom plate, and a plurality of bent plates that are bent at the upper end edges of the side plates, respectively, and a packaged object is accommodated in a space surrounded by the bottom plate and the side plates. A box body used as a housing space;
The bottom surface of the same polygon as the bottom plate of the box body and a plurality of buffer side surfaces rising from the respective sides of the bottom surface part, and is fitted into the housing space of the box body to be placed in the box body and the housing space. A cushioning material present between the items to be packed;
A vent is formed in the bottom surface of the cushioning material,
A lid for closing the vent hole is provided.

The packaging box of the invention (A8) is the packaging box of the invention A7.
The lid is formed on the bottom surface of the cushioning material so as to be displaced by being pushed by an article to be packed housed in the housing space of the box body and closing the vent hole.

The packaging box of this invention (A9) is the packaging box of any of the inventions A1 to A8,
The cushioning material is assembled by folding cardboard.

  According to the packaging box of the invention A1, the cushioning material is kept in the housing space of the box body when the packaged item is taken out without impairing the ease of fitting the cushioning material into the housing space of the box body. Can do.

  In the packing box of the invention A2, the packing material can be taken out with a simple structure and without compromising the ease of fitting the cushioning material into the housing space of the box body as compared with the case without the structure of the invention. Sometimes the cushioning material can be kept in the storage space of the box body.

  In the packaging box of the invention A3, the cushioning material can be removed when the packaged item is taken out without impairing the ease of fitting the cushioning material into the housing space of the box body as compared with the case without the configuration of the invention. It can be kept in the storage space of the box body, and the cushioning material can be easily taken out from the storage space of the box body.

  In the packaging box of the invention A4, the cushioning material can be removed when the packaged item is taken out without impairing the ease of fitting the cushioning material into the housing space of the box body as compared with the case without the configuration of the invention. It can be stably held in the storage space of the box body.

  In the packaging box of the invention A5, the cushioning material can be removed at the time of taking out the package without impairing the ease of fitting the cushioning material into the housing space of the box body as compared with the case without the configuration of the invention. It can be securely held in the storage space of the box body.

  In the packaging box of the invention A6, the cushioning material can be removed when the packaged item is taken out without impairing the ease of fitting the cushioning material into the housing space of the box body as compared with the case without the configuration of the invention. It can be efficiently and reliably kept in the storage space of the box body.

  In the packaging box of the invention A7, the packaging material can be taken out with a simple structure and without impairing the ease of fitting the cushioning material into the housing space of the box body as compared with the case without the structure of the invention. Sometimes the cushioning material can be easily retained in the housing space of the box body.

  In the packaging box of the invention A8, the cushioning material is removed when the packaged item is taken out without impairing the ease of fitting the cushioning material into the housing space of the box body as compared with the case without the configuration of the invention. It can be efficiently and reliably kept in the storage space of the box body.

  In the packaging box of the invention A9, compared with the case without the configuration of the invention, the cushioning material with a simple configuration can be packed without impairing the ease of fitting the cushioning material into the housing space of the box body. The cushioning material can be kept in the storage space of the box body when the object is taken out.

FIG. 3 is an exploded perspective view showing a packaging box and the like according to Embodiment 1. It is a perspective view which shows the state of the 1st process (process which bends the flap in which the to-be-restrained part of the box main body was formed) of the packing operation | work by the packing box of FIG. It is a perspective view which shows the state of the other process (process to engage | insert a buffer material in the storage space of a box main body) of the packing operation | work by the packing box of FIG. It is a top view which shows a state when the packaging box of FIG. 3 is seen from upper direction. It is a perspective view which shows the state of the other process (process to accommodate a to-be-packaged object in the packing box of FIG. 3) of the packing operation | work by the packing box of FIG. It is a top view which shows a state when the packaging box of FIG. 5 is seen from upper direction. It is a top view which shows the box main body which comprises the packaging box of FIG. The main part (flap formed as a control part) of the packaging box of FIG. 7 is shown, (a) is a perspective view which shows the structure of the principal part, (b) is the state when the principal part is bent. It is a perspective view shown. It is a perspective view which shows the shock absorbing material which comprises the packaging box of FIG. It is a top view which shows a state when it inserts in the box main body of the shock absorbing material of FIG. It is a perspective view which shows the principal part (The buffer side part and vent hole etc. in which the to-be-suppressed part is formed) of the buffer material of FIG. 9 shows an operation process when the cushioning material of FIG. 9 is fitted into the storage space of the box body of FIG. 7, (a) is a cross-sectional explanatory view showing a state immediately before the fitting, and (b) is a drawing of the fitting. It is sectional explanatory drawing which shows the state in the middle. It is sectional explanatory drawing which shows the state of the stage which the fitting operation | work of FIG. 12 was completed. The other example of a structure of the flap formed as a control part is shown, (a) is a perspective view which shows the structure of the flap, (b) is a perspective view which shows the state when the flap is bent. The still another structural example of the flap formed as a stop part is shown, (a) is a perspective view which shows the structure of the flap, (b) is a perspective view which shows the state when the flap is bent. It is a perspective view which shows the other structural example of a to-be-restrained part. It is sectional explanatory drawing which shows the state at the time of the insertion operation | work at the time of combining the to-be-restrained part of FIG. 16, and the stop part of FIG. It is sectional explanatory drawing which shows the state of the stage which the fitting operation | work of FIG. 17 was completed. The other structural example of a to-be-restrained part is shown, (a) is a perspective view which shows the structural example, (b) is sectional drawing which shows the structural example. FIG. 21 is an explanatory cross-sectional view showing a state at the stage where the fitting operation is completed when the restrained portion of FIG. 20 is applied. The other example of a structure of a stop part and a to-be-restrained part is shown, (a) is a perspective view which shows the example of a structure of the stop part, (b) is a perspective view which shows the example of a structure of the to-be-restrained part. It is a perspective view which shows the other structural example of a shock absorbing material. It is a perspective view which shows the use condition of the principal part (falling prevention piece) of the shock absorbing material of FIG. It is a top view which shows the use condition of the principal part of the shock absorbing material of FIG. It is sectional drawing which shows the use condition of the principal part of the shock absorbing material of FIG. It is a perspective view which shows the other structural example of the fall prevention piece formed in a buffer material. It is a perspective view which shows another structural example of a shock absorbing material. 27 shows the configuration of the main part (cover material) of the cushioning material of FIG. 27, (a) is a cross-sectional view showing the configuration of the cover material, and (b) is a cross-sectional explanatory view showing the use state of the cover material. is there. It is a perspective view which shows another structural example of a shock absorbing material. It is a perspective view which shows the shock absorbing material which comprises the packaging box which concerns on Embodiment 2. FIG. FIG. 31 is a cross-sectional explanatory view showing a state in which the fitting operation is completed in the packaging box to which the cushioning material of FIG. 30 is applied. It is a perspective view which shows another structural example (principal part) of a shock absorbing material. 32 shows a configuration example of the box body used in combination with the cushioning material of FIG. 32 (a configuration of a flap as a restraining portion), and (a) is a perspective view showing a configuration of a flap as a restraining portion in the box body. b) is a perspective view showing a state in which the flap is bent. FIG. 34 is an explanatory cross-sectional view showing a state in which a fitting operation is completed in a packaging box to which the cushioning material of FIG. 32 and the box body of FIG. 33 are applied. It is a perspective view which shows another structural example (principal part) of a shock absorbing material. FIG. 36 is a perspective view showing a configuration example of a box body (configuration of a flap as a restraining portion) used in combination with the cushioning material of FIG. 35, and (a) is a perspective view showing a configuration of a flap as a restraining portion in the box body; b) is a perspective view showing a state in which the flap is bent. FIG. 37 is an explanatory cross-sectional view showing a state in which a fitting operation is completed in a packaging box to which the cushioning material of FIG. 35 and the box body of FIG. 36 are applied. It is a perspective view which shows the shock absorbing material which comprises the packaging box which concerns on Embodiment 3. FIG. It is a top view which shows the state of the step which was inserted in the accommodation space of the box main body used in combination with the buffer material of FIG.

  Hereinafter, modes for carrying out the present invention (hereinafter simply referred to as “embodiments”) will be described with reference to the accompanying drawings.

[Embodiment 1]
1 to 6 show a packaging box according to the first embodiment. FIG. 1 shows the components of the packaging box and the items to be packed, and FIGS. 2 to 6 show the usage state of the packaging box (the state of the main process of the packaging work).

  As shown in FIGS. 1 to 3 and the like, the packaging box 1 according to the first embodiment is fitted into a box body 2 having an accommodation space S1 for accommodating an object 100 and an accommodation space S1 of the box body 2. The cushion body 3 and the cushioning material 3 existing between the objects to be packed 100 accommodated in the accommodating space S. The to-be-packaged product 100 is stored in a storage space S2 surrounded by a buffer material 3 fitted in the storage space S1 of the box body 2 as shown in FIGS. The cushioning material 3 is a structure having shock absorption, and protects the packaged object 100 from an external impact applied to the box body 2.

First, as shown in FIGS. 1 to 7 and the like, the box body 2 includes a rectangular bottom plate 21, four rectangular side plates 22 to 25 rising from the side portions 21 a to 21 d of the bottom plate 21, and each of the rectangular side plates 22 to 25. It is a box-shaped structure provided with four flaps (bending plates) 26 to 29 that are bent at upper end edges 22a to 25a of the side plates 22 to 25, respectively. The box body 2, leave the connected state of the adjacent side plates to each other in a state where substantially vertically is raised four side plates 22 to 25 which is continuous from each side of the advance base plate 21, the bottom plate 21 and four A rectangular column-shaped space surrounded by the side plates 22 to 25 is used as an accommodation space S1 in which the article to be packed 100 is accommodated. The box body 2 uses a single cardboard cut based on the shape of the unfolded developed view. The cardboard body 2 is bent at a required portion and fixed to each other by means such as a binding needle or an adhesive. As a result, it is assembled into the required box shape.

  Of these, the first flap 26 of the first side plate 22 rising from one long side portion 21a of the bottom plate 21 is configured as an outer lid for closing the opening of the box body 2 at the end of packing. The first flap 26 has a rectangular main body portion 26a having substantially the same shape and size as the bottom plate 21, and an insertion piece 26b formed in a rectangular shape protruding substantially at the center of the free end of the main body portion 26a. It is formed in a shape. Reference numeral 26c in the figure indicates a handle notch. The handle notch 26c has a shape that makes it easy to bend the insertion piece 26b at the free end of the main body 26a and is used as a handle by inserting a finger of the hand when opening the first flap 26 that is the outer lid. Has been disconnected.

  Further, the second flap 27 of the second side plate 23 rising from the other long side portion 21b of the bottom plate 21 is configured as an inner lid for closing the opening of the box body 2 in combination with the outer lid at the end of packing. Yes. The second flap 27 has a rectangular main body portion 27a having substantially the same shape and size as the bottom plate 21, and the main body portion 27a is easily bent at the upper end edge 23a of the second side plate 23, and the first flap 26 is an outer lid. It is formed in the shape which has the insertion notch part 27b cut | disconnected by the shape suitable for using as an insertion hole which inserts the insertion piece 26b.

  Further, the third side plate 24 and the third flap 28 and the fourth flap 29 of the fourth side plate 25 rising from the two short sides 21c and 21d of the bottom plate 21 are all shown in FIGS. 2, 7, 8b, and 12, respectively. As shown in the drawings, the restraining portions 4A and 4B having portions 41 that are in a state of facing away from the bottom plate 21 of the box body 2 when the box body 2 is folded into the housing space S1 are formed. Yes.

  As shown in FIG. 7 and the like, the third flap 28 and the fourth flap 29 in which the restraining portions 4A and 4B are formed have a width approximately the same as the width of the short side of the bottom plate 21 and the height of the side plates 24 and 25. A rectangular main body 28a, 29a having a height h1 relatively lower than the height H (for example, a dimension of about 1/4 of the height H of each side plate 24, 25), and the free ends of the main body 28a, 29a. Are formed in a shape having projecting pieces 28b and 29b formed in a rectangular shape projecting substantially at the center. The protruding pieces 28b and 29b have heights h2 from the upper edges 24a and 25a of the third side plate 24 and the fourth side plate 25 that are relatively lower than the height H of the side plates 24 and 25 (for example, 1 / Dimension of about 2 to 3/4). Further, the projecting pieces 28 b and 29 b have a width that is about half the length of the short side of the bottom plate 21 (the width of the side plates 24 and 25).

  The restraining portions 4A and 4B are formed in the box main body when the tip portions 28c and 29c, which are free ends of the protruding pieces 28b and 29b in the third flap 28 and the fourth flap 29, are bent into the accommodation space S1 as described above. It is the structure used as the site | part 41 which will be in the state which leaves | separates and faces 2 bottom plates 21. FIG. Further, when the restraining portions 4A and 4B are bent into the housing space S1 when the main body portions 28a and 29a and the protruding pieces 28b and 29b of the third flap 28 and the fourth flap 29 are bent, It does not stop in the state of approaching or contacting the third side plate 24 and the fourth side plate 25 that are in a positional relationship facing each of the flaps 28 and 29, but is separated from the side plates 23 and 24 by the reaction force to be restored. (See FIG. 12 and the like). This characteristic is that when the flaps 28 and 29 are bent, the bent portions at the upper edges 24a and 25a of the side plates 24 and 25 are elastically deformed from the corrugated cardboard. It is considered that a reaction force against elastic deformation is generated, and the reaction force is obtained by a mechanism in which the flaps 28 and 29 are displaced in the direction of restoring (the direction opposite to the bending direction).

  On the other hand, as shown in FIG. 1 to FIG. 7, FIG. 9, and the like, the cushioning material 3 includes four bottom surfaces 31 having the same rectangular shape as the bottom plate 21 of the box body 2 and four cushions rising from each side of the bottom surface 31. It is provided with the side parts 32-35, and is inserted in the accommodation space S1 of the box main body 2 at least at the time of packing, and is made to exist between the box main body 2 and the packaged object 100 accommodated in the accommodation space S1. It is a structure for buffering used in the state. This cushioning material 3 uses a single cardboard cut based on the shape of the developed development, bends it at a required portion, and fixes the required portions together by means such as a binding needle or an adhesive. It is assembled and manufactured. For this reason, the bottom surface portion 31 and the buffer side surface portions 32 to 35 are configured as portions of a shape and a structure formed by a corrugated cardboard member. In addition, the buffer side surfaces 32 to 35 are provided with a buffer structure configured based on conditions such as a shape, a dimension, a position, and the like according to the external shape of the packaged object 100 to be packed.

  Since the bottom surface portion 31 needs to fit the cushioning material 3 into the accommodation space S1 of the box body 2, the plane dimension is the rectangular dimension (long side: length L and short side) of the bottom plate 21 of the box body 2 : Each dimension of the width W) is set to a value smaller by several mm to several tens mm, for example. The bottom surface portion 31 is configured as a flat bottom plate formed of a single cardboard. The buffer side surfaces 32 to 35 have at least portions that can face the inner surfaces of the four side plates 22 to 25 of the box body 2 when the buffer material is fitted into the housing space S1 of the box body 2. In addition, it is formed as a side plate having a buffer structure portion selected according to the external shape of the packaged object 100 to be packed.

  Among these, the first side surface portion 32 rising from one long side portion 31a of the bottom plate 31 is covered with a rectangular side plate portion 32a substantially opposite to the inner surface of the first side plate 22 of the box body 2 and an upper end edge of the side plate portion 32a. It is formed in a shape having a belt-like bent portion 32 b that is bent to the upper surface side of the package 100 and a first buffer structure portion 36 that is foldably connected at the tip end portion of the bent portion 32. Reference numeral 32c in FIG. 9 and the like indicates a notch. The first buffer structure portion 36 has an extended portion of a planar rectangle formed in a state protruding from a substantially central portion of the bent portion 32 b with a width of about 1/3 of the length L of the long side, and the long side of the bottom plate 31. This is a hollow buffer portion assembled so that it is folded inward (folded) along a crease line substantially parallel to the portion 31a and wound in a single shape so as to form a square tube as a whole. The first buffer structure portion 36 can be brought into a state of being present on the inner surface side of the bent portion 32 b by being bent at the distal end portion of the bent portion 32.

  Further, the second side surface portion 33 rising from the other long side portion 31b of the bottom plate 31 is bent at a rectangular side plate portion 32a substantially facing the inner surface of the second side plate 23 of the box body 2 and an upper end edge of the side plate portion 32a. It is formed in a shape having a second buffer structure portion 37 that is freely connected. The second buffer structure portion 37 has an extension portion of a planar rectangle formed in a state of projecting with a width of about ½ of the length of the long side L from the substantially central portion of the side plate portion 33a. It is a buffer part of a hollow structure assembled so that it is folded inward (folded) along a crease line substantially parallel to the part 31b and wound in a single layer to form a flat rectangular tube shape as a whole. The second buffer structure portion 37 can be brought into a state of being present on the inner surface side of the bent portion 32b by being bent at the upper end edge of the side plate portion 32a.

  Furthermore, as shown in FIGS. 2 to 6 and FIGS. 9 to 12, etc., each of the third side surface 34 and the fourth side surface 35 rising from the two short sides 31c and 31d of the bottom plate 31, respectively. The third buffer structure portion 38 and the fourth buffer structure portion 39 are connected to the short side portions 31c and 31d so as to be bent. As shown in FIGS. 9 and 11, the third and fourth buffer structure portions 38 and 39 are planar rectangular extensions formed in a state of protruding from the short side portions 31 c and 31 d of the bottom plate 31. A corner that is folded inward along a crease line that is substantially parallel to the long side portion of the bottom plate 31 (folded) and wound so that only a portion close to the short side portion of the bottom plate 31 is doubled. It is the buffer part of the hollow structure assembled so that it might become a cylindrical shape. As shown in FIG. 9 and the like, the third and fourth buffer structure portions 38 and 39 are bent in the direction in which the short side portions 31c and 31d of the bottom plate 31 are raised (directions indicated by dotted arrows in FIG. 9). It can be made to exist on the bottom plate 31.

  Further, in the cushioning material 3, two vent holes 5A and 5B having a rectangular opening shape are formed in the bottom plate 31 as shown in FIGS.

  When the cushioning material 3 is fitted into the accommodation space S1 of the box body 2, the vent holes 6A and 5B must not enter the accommodation space S1 while the cushioning material 3 pushes out air existing in the accommodation space S1 to the outside. Therefore, it is a hole (opening) through which the air existing in the accommodation space S1 passes to be excluded to the outside. Due to the presence of the vent holes 5A and 5B, the cushioning material 3 can be easily fitted into the accommodation space S1 of the box body 2 as described later. The opening shape, number, formation position, and the like of the vent holes 5A and 5B are not particularly limited as long as the contents do not hinder the packing operation or cause a significant decrease in the strength of the cushioning material 3, for example. Not.

  Further, in the cushioning material 3, the third side surface portion 34 and the fourth side surface portion 35 are arranged such that the third flap 28 and the fourth side surface 4 of the box body 2 are fitted when the cushioning material 3 is fitted in the accommodation space S 1 of the box body 2. Since the stoppers 4A and 4B formed on the flap 29 are in a positional relationship to face each other, the stoppers 4A when the cushioning material 3 is fitted into the accommodating spaces S1 of the box body 2 on the side surfaces 34 and 35, respectively. , 4B are provided with restrained portions 6A and 6B having a portion 61 that faces and faces the bottom plate 21 side of the box body 2 so as to abut against the portion 41 of 4B.

  The restrained parts 6A and 6B are rectangular structure parts (through-holes) that are rectangular in the double-sided outer surface parts 38a and 39a of the buffer structure parts 38 and 39 of the third side surface part 34 and the fourth side surface part 35, respectively. 62 and 63 are formed, respectively, and the lower side portions 62a and 63a of the rectangular through holes are used as the portions 61 facing the portions 41 of the stop portions 4A and 4B.

  The lower side portions 62a and 63a as the portions 61 of the through holes have a height h5 from the bottom surface portion 31 in the flaps 28 and 29 from the height H of the third and fourth side plates 24 and 25 of the box body 2. It is set to substantially correspond to a value (H−h2) obtained by subtracting the height h2 of the protruding pieces 28b and 29b. The opening width (width of the portion parallel to the short side of the bottom surface portion 31) w6 of each through-hole 62, 63 is set to a value wider than the width of the protruding pieces 28b, 29b in the flaps 28, 29. The tip portions of the projecting pieces 28b and 29b are allowed to enter into the through holes 62 and 63 (depressions).

  The opening height (the distance from the lower side portions 62a, 63a to the upper side portions 62b, 63b) h6 of each through hole 62, 63 is set mainly from the following viewpoint. That is, in this packing box 1, when the cushioning material 3 is fitted into the housing space 1 of the box body 2, the tip portions 28c, 29c as the portions 41 of the protruding pieces 28b, 29b in the flaps 28, 29 are lower sides. It will be in the state which faces the parts 62a and 63a (refer FIG. 13). For this reason, even when the upper side portions 62b and 63b of the through holes 62 and 63 come into contact with a part of the bent pieces 28b and 29b in the bent state in such a state, the portions 41 and 61 It is a viewpoint that the state after facing each other can be maintained without obstructing the state facing each other so that they face each other.

  Next, the state in the main process of the packing operation | work using this packing box 1 is demonstrated.

  First, in the packing box 1, as shown in FIGS. 2 to 4 and the like, the cushioning material 3 is fitted in the accommodation space S1 of the box body 2.

  Specifically, as shown in FIGS. 2, 8b, etc., first, in the box body 2, the flaps 28, 29 formed with the restrained portions 4A, 4B are accommodated along the upper edge 24a, 26A of each side plate. It is bent in the direction indicated by the dotted arrow A so as to be present inside S1. Thereby, the front-end | tip parts 28c and 29c (part 41 of the to-be-stopped parts 4A and 4B) in the protrusion pieces 28b and 29b of the flaps 28 and 29 are made to face the bottom plate 21 (FIGS. 8b and 12a). At this time, the front end portions 28c and 29c face each other in an inclined state at a position away from the bottom plate 21.

  Next, the cushioning material 3 is fitted into the accommodation space S1 of the box body 2 in a state in which the flaps 28 and 29 are bent as shown in FIGS.

  At this time, the bottom surface portion 31 of the cushioning material 3 has the same shape as the bottom plate 21 of the box body 2 and the dimensions (long side and short side dimensions) are slightly smaller. For this reason, when the buffer material 3 is fitted, the buffer side surfaces 32 to 35 of the buffer material 3 face each other as the bottom surface portion 31 of the buffer material 3 enters the accommodation space S1 of the box main body 2. The upper end edges 22a to 25a of the side plates 22 to 25 and the inner surfaces thereof are brought into contact with each other to pass therethrough. Further, in the middle of the passage, the buffer side surfaces 32 to 35 of the cushioning material 3 are bent to stand substantially perpendicular to the bottom surface 31 and the side plates 22 to 25 facing the box body 2 are opposed to each other. It will be in the state which contact | adhered substantially with respect to the inner surface (refer FIG.3, FIG.4 etc.). Strictly speaking, the buffer side surfaces 34 and 35 are not in close contact with the inner surfaces of the opposing side plates 24 and 25 but are in contact with a part of the flaps 28 and 29 (see FIGS. 12b and 13).

  As a result, the cushioning material 3 enters the parenthesis in a state in which the accommodation space S1 of the box body 2 is sealed, so that the space between the bottom surface 31 of the cushioning material 3 and the bottom plate 21 of the box body 2 is shown in FIG. The air existing in the space E is in a state where it loses its escape and is compressed, and the fitting operation of the cushioning material 3 into the housing space S1 of the box body 2 is difficult to receive due to the resistance of the air in the space E. .

  However, in the cushioning material 3, the air existing in the space E can be discharged to the outside through the vent holes 5 </ b> A and 5 </ b> B formed in the bottom surface portion 31 as indicated by a dotted arrow in FIG. 12 b. Therefore, the work of fitting the buffer material 3 into the housing space S1 of the box body 2 is easily performed without receiving the air resistance of the space E.

  Further, in the process of fitting the cushioning material 3 into the housing space S1 of the box body 2, as shown in FIG. 12b, lower portions of the cushioning side surface portions 34 and 35 of the cushioning material 3 (short side portions 31c and 31d of the bottom surface portion 31). And the lower outer surface of each side surface portion are brought into contact with and pressed against the flaps 28 and 29 of the box body 2 which are bent into the accommodation space S1 and inclined. Accordingly, the flaps 28 and 29 are further bent so as to be displaced in the direction B in which the flaps 28 and 29 approach or contact the side plates 24 and 25 of the box body 2. In the flaps 28 and 29 that are further bent in this manner, the cardboard is elastically deformed at the upper end edges 24a and 25a of the side plates 24 and 25. Therefore, the flaps 28 and 29 attempt to restore the state (position) before being bent. A reaction force F is generated (FIG. 12b).

  Thereafter, when the cushioning material 3 is fitted into the housing space S1 of the box body 2 until the bottom surface portion 31 of the cushioning material 3 comes into contact with the bottom plate 21 of the box body 2, the tips of the protruding pieces 28b and 29b of the flaps 28 and 29 are placed. When the portions 28c and 29c are opposed to the through holes 62 and 63 formed in the outer side surfaces 38a and 39a of the buffer structure portions 38 and 39 of the buffer side surfaces 34 and 35, they contact the outer side surfaces 38a and 39a. From this state, the reaction force F enters the inside of the through holes 62 and 63 (recessed space).

As a result, as shown in FIG. 13, the lower sides 62a and 63a of the through holes 62 and 63 in the cushioning material 3 (the portions 61 in the restrained portions 6A and 6B) are the tips of the protruding pieces 28b and 29b of the flaps 28 and 29. The parts 28c and 29c (parts 41 in the restraining parts 4A and 4B) are in a state of facing and facing each other relative to the bottom plate 21 side of the box body 2.

  At this time, the lower side portions 62a and 63a of the through holes 62 and 63 may be in contact with the tip portions 28c and 29c of the protruding pieces 28b and 29b, but may be in a separated state. In the case of the separated state, as illustrated in FIG. 13, the outer surfaces of the protruding pieces 28 b and 29 b of the flaps 28 and 29 are in contact with the upper side portions 62 b and 63 b of the through holes 62 and 63, and the cushioning material 3. Is moved in the direction C to be extracted from the housing space S1 of the box body 2 so that the lower side portions 62a and 63a of the through holes 62 and 63 come into contact with the front end portions 28c and 29c of the protruding pieces 28b and 29b. That's fine.

  Through the steps so far, as shown in FIGS. 3, 4, 13, etc., the packaging box 1 is obtained in which the cushioning material 3 is fitted in the accommodation space S <b> 1 of the box body 2.

  In this case, the packaging box 1 is formed by newly forming a storage space S2 surrounded by the four buffer side surfaces 32 to 35 in a state where the cushioning material 3 stands in the accommodation space S1 of the box body 2. The storage space S <b> 2 has a shape in which the second buffer structure portion 37 exists above the second buffer side surface portion 33 and a part of the space is narrowed. Further, the first buffer structure portion 36 of the first buffer side surface portion 32 does not hinder the storing operation of the packaged object 100 in the storage space S2, and occurs at the upper part of the packaged object 100 after the storage is completed. The entrance of the storage space S2 can be temporarily displaced to an unoccupied retreat position by the bent portion 32b so that the empty space can be filled.

  Subsequently, as shown in FIG. 5, the packing object 100 is held in the storage space S <b> 2 of the packing box 1 by being lowered and stored in a packing posture in a packing posture. Next, by bending the first buffer structure 36 in the first buffer side surface portion 32 of the buffer material 3 with the bent portion 32b inward, the first side plate 22 (actually, as shown in FIG. 6). Is in a state of being interposed in the gap between the side plate portion 32 a) of the first buffer side surface portion 32 of the cushioning material 3 and the article to be packed 100.

  Thereby, as shown in FIG. 6 etc., the to-be-packaged object 100 is surrounded by the bottom surface portion 31 of the cushioning material 3, and the left and right side portions 100b and 100c in the longitudinal direction are the first side surfaces of the cushioning material 3. Surrounded by the portion 32 (including the first buffer structure portion 36) and the second side surface portion 33 (including the second buffer structure portion 37), the two side portions 100d and 100e in the short direction are the buffer material 3. The third side surface portion 34 (third buffer structure portion 38) and the fourth side surface portion 35 (fourth buffer structure portion 39) are surrounded. In the packaged object 100, for example, a protruding portion 102 having a shape protruding from the other portion is present on the upper portion or the like, but the buffer structure portion (body) such as the second buffer structure portion 37 is such a portion. It is designed to exist in a state where the protrusion 102 is avoided.

  Subsequently, the packaging box 1 is configured to bend the second flap 27, which is the inner lid of the box body 2, at the upper edge 23 a of the second side plate 23 as shown by the dotted arrow in FIG. Then, the first flap 26, which is the outer lid of the box body 2, is folded at the upper edge 22 a of the first side plate 22 so as to be overlaid on the second flap 27. Finally, the insertion piece 26 b of the first flap 26 of the box body 2 is inserted into the insertion notch 27 b of the second flap 27. At this time, the first buffer structure 36 is placed between the upper part of the article 100 and the second and first flaps 27 and 26 of the box body 2.

  Through all the above steps, the packaging box 1 is covered with the second flap 27 and the first flap 26, which are lids, of the accommodation space S1 and the storage space S2, and the packaging operation is completed.

  The article to be packed 100 packed in the packing box 1 is in a state in which the cushioning material 3 is interposed between all the inner wall surfaces of the box body 2. For this reason, when the packaging box 1 receives an impact or the like from the outside during transportation or the like, the impact is absorbed and buffered by the cushioning material 3, so that the portion to be packed 100 packed in the packaging box 1 is , It will be protected from such external impacts.

  Next, the unpacking operation | work of this packing box 1 is demonstrated.

  The unpacking operation can be performed by reversing each step of the above-described packing operation for the packing box 1. That is, first, after the insertion piece 26b of the first flap 26 of the box body 2 is extracted from the insertion cutout portion 27b of the second flap 27, the first flap 26 and the second flap 27 are opened in this order. To do. As a result, as shown in FIG. 6, a part of the upper part of the packaged object 100 accommodated in the state surrounded by the cushioning material 3 in the box body 2 of the packing box 1 appears to be exposed to the outside. .

  Then, the 1st buffer structure part 36 is evacuated from the upper part of the to-be-packaged goods 100 by bending so that the bending part 32b of the 1st buffer side surface part of the buffer material 3 may be opened (FIG. 5). As a result, preparation (attitude) for taking out the article 100 from the packing box 1 is completed.

  Thereafter, the object to be packed 100 is grasped by hand and taken out to the outside so as to be lifted from the accommodation space S1 of the packaging box 1 (actually the storage space S2 formed of the cushioning material 3).

  At this time, if a part of the cushioning material 3 is in contact with a part of the packaged object 100 directly or via the packaging material, the cushioning material 3 is also covered with the work of taking out the packaged object 100. Sometimes it is taken out together with the package 100. In addition, in the packaging box 1, the vent holes 5 </ b> A and 5 </ b> B are formed in the bottom surface portion 31 of the cushioning material 3 for the purpose of facilitating the fitting of the cushioning material 3 into the housing space S <b> 1 of the box body 2. When it is necessary to take out the cushioning material 3 from the housing space S1 of the box body 2, external air flows into the space E between the bottom surface portion 31 of the cushioning material 3 and the bottom plate 21 of the box body 2 through the vent holes 5A and 5B. Therefore, it can be easily taken out. That is, when the cushioning material 3 does not have the vent holes 5A and 5B, the space E is sealed, and only the cushioning material 3 moves in the take-out direction C to widen the space E. There is a case where the inside is temporarily in a vacuum state and works like a suction resistance when the buffer material 3 moves. However, in the shock absorbing material 3 in which the vent holes 5A and 5B are formed, such suction resistance does not occur, so that the work of taking out from the housing space S1 of the box body 2 can be easily performed. As a result, in the case of the cushioning material 3 in which the vent holes 5A and 5B are formed, if the part is in contact with the part 100 to be taken out, the box is integrated with the part 100 to be packed. It becomes easy to take out together from the accommodation space S1 of the main body 2.

In this regard, in this packaging box 1, when the shock absorbing material 3 receives an external force that is moved in the direction C taken out from the housing space S1 of the box body 2, as shown in FIG. The lower surface portions 62a and 63a (the portions 61 of the restrained portions 6A and 6B) of the through holes 62 and 63 in the buffer structure portions 38 and 39 formed in the third and fourth buffer side surfaces 34 and 35 are the box body 2. The third and fourth side plates 24, 25 are in contact with the tip portions 28c, 29c (the portions 41 of the restraining portions 4A, 4B) of the protruding pieces 28b, 29b formed on the flaps 28, 29. Thereby, the lower surface portions 62a and 63a (parts 61) of the through holes 62 and 63 which are the restrained portions 6A and 6B in the cushioning material 3 are formed on the protruding pieces 28b and 29b which are the restraining portions 4A and 4B in the box body 2. Since the front end portions 28c and 29c (parts 41) are in a state of being caught, the movement of the cushioning material 3 in the take-out direction C is stopped , and the state in which the buffer body 3 stays in the accommodation space S1 without being taken out from the accommodation space S1 Smelled.

  Therefore, when unpacking the packaging box 1, it is possible to take out only the article 100 from the accommodation space S <b> 2 by the cushioning material 3 while keeping the cushioning material 3 in the accommodation space S <b> 1 of the box body 2. At this time, there is no possibility that the cushioning material 3 is damaged. Further, even after the object to be packed 100 is taken out (including after the object to be packed 100 is taken out when the object to be packed 100 and the cushioning material 3 are packed in a state where they are not in contact), the buffering is also performed. The material 3 is kept in a state of being attached to the accommodation space S1 of the box body 2 and does not come off.

  Thus, the unpacking operation of the packaging box 1 is completed. In particular, in the case of the packaging box 1, the cushioning material 3 does not break during unpacking and is present in a state of being fitted into the accommodation space S <b> 1 of the box body 2. For this reason, for example, when the article to be packed 100 is a replacement part (or product) that needs to be collected, after the used part (product) to be replaced is stored in the packing box 1 and packed. When performing the operation | work of collect | recovering, the packaging box 1 can be reused. Further, when the packaging box 1 is reused in this way, the cushioning material 3 is not removed at the time of unpacking and lost, and the cushioning material 3 removed at the time of unpacking is accommodated in the storage space of the box body 2. There is no need to perform the troublesome work of accurately re-installing in S1, and repacking can be easily and correctly, which is convenient for the user.

  On the other hand, when disposing the packaging box 1 after unpacking, after removing the cushioning material 3 from the housing space S1 of the box body 2, the box body 2 and the cushioning material 3 are crushed as necessary and then disposed. Become.

At this time, when removing the cushioning material 3, for example, a finger is put into the internal space (shock absorbing space) S <b> 3 (see FIG. 13) in the third and fourth cushioning structures 38, 39 and the through hole 62. , 63, the projections 28b, 29b of the flaps 28, 29 are pushed and displaced outward (in the direction approaching the side plates 24, 25) against the reaction force F. As a result, the tip portions 28c and 29c of the protruding portions 28b and 29b, which are the restraining portions 4A and 4B, do not come into contact with the lower side portions 62a and 63a in the through holes 62 and 63 that are the restrained portions 6A and 6B. In this state, the cushioning material 3 can be easily removed from the accommodation space S1 by moving it in the direction C in which the cushioning material 3 is taken out.

[Modification of Embodiment 1]
The flap forming the restraining portion 4 in the box body 2 is limited to the case where it is configured by the body portions 28a and 29a and the protruding pieces 28b and 29b like the flaps 28 and 29 shown in the first embodiment (FIG. 8 and the like). For example, the configuration shown in FIGS. 14 and 15 may be employed.

The flap 29 forming the restraining portion 4C illustrated in FIG. 14 does not form the main body portion 29a, and is configured only by the protruding piece 29b. This configuration example is the same for the flap 28 on the side opposite to the flap 29 (this is the same in the next configuration example). In the configuration example illustrated in FIG. 14, since the main body portion 29 a is not provided, the configuration is simple. However, the reaction force for restoration that occurs when the protruding piece 29 b is bent into the accommodation space S <b> 1 is slightly weakened.

The flap 29 forming the restraining portion 4D illustrated in FIG. 15 forms a main body portion 29d having a size that surrounds the protruding piece 29b from the outside, and cuts a portion that becomes the protruding piece 29b in the main body portion 29d. It is comprised so that it may form. In the configuration example illustrated in FIG. 15, as shown in FIG. 15 b, only the protruding piece 29 b needs to be used as the restraining portion 4 </ b> D at the time of packing, and the remaining main body portion 29 d is used for the package object 100 and the box body 2. It can be used between the lids as a cushioning material and as a lid material.

With respect to the restrained portion 6 formed on the cushioning side surface portion in the cushioning material 3, the through hole 62 (lower piece portion) formed as the restrained portion 6A on the cushioning side surface portion 34 (buffer structure portion 38) illustrated in the first embodiment. The configuration illustrated in FIG. 16 to FIG. 20 is not limited to the configuration of FIG. These configurations can be similarly applied to the restrained portion 6B formed on the buffer side surface portion 35 (buffer structure portion 39) disposed on the opposite side of the buffer side surface portion 34.

The to-be- restrained portion 6C shown in FIGS. 16 to 18 has a rectangular shape on the outermost side surface portion (one cardboard portion) of the outer surface portions 38a having a double structure in the buffer structure portion 38 of the buffer side surface portion 34. An opening (non-through hole) 64 is formed (not formed on the inner side surface portion 34d), and the lower side portion 64a of the opening 64 is used as the portion 61 of the restrained portion 6A. The size and formation position of the opening 64 may be the same as the conditions of the through hole 62, but may be different.

As shown in FIG. 18, the restrained portion 6 </ b> C configured by the opening (non-through hole) 64 has the restraining portion 4 </ b > A in the box body 2 when the cushioning material 3 is fitted in the accommodation space S <b> 1 of the box body 2. The tip portion 28c of the protruding piece 28b of the flap 28 to be formed is in a state of entering the recessed opening 64 so that the lower side portion 64a of the opening 64 faces the bottom plate 21 in a facing state. Become. Thereby, even if it is going to move to the direction C which takes out the buffer material 3, the lower side part 64a of the opening 64 which is the to-be- restrained part 6C hits the front-end | tip part 28c in the protrusion part 28b of the flap 28 which is the to-be- stopped part 4A, and the movement since but is restrained, so that the buffer material 3 remains in the accommodating space S1 not removed. Further, the restrained portion 6 </ b> C configured by the opening (non-through hole) 64 is a range in which the tip end portion 28 a of the protruding piece 28 b of the flap 28 is displaced by the inner side surface portion 34 d existing in a state of closing the opening 64 from one side. Therefore, for example, there is no possibility of displacement to a position deviated from the lower side portion 64a of the opening 64, and the state where the tip end portion 28a and the lower side portion 64a face each other is stably maintained.

  On the other hand, when it is desired to take out the cushioning material 3 from the accommodation space S1, for example, the following operation is performed. That is, a thin member or a plate-like object is inserted into the gap between the outer surface portion 38 a of the buffer structure portion 38 of the third buffer side surface portion 34 and the protruding piece 28 b of the flap 28, and the protruding piece 28 b is displaced so as to approach the side plate 24. Thus, after the tip end portion 28c is shifted to a position where it does not hit the lower side portion 64a of the opening 64, the cushioning material 3 may be moved in the take-out direction C facing upward.

The stop portion 6D of FIG. 20 from FIG. 19, the projecting piece 65 from the outer surface 38a of the rectangular shape protruding outwardly in the buffer structure portion 38 of the buffer side portion 34 is formed, tip portions 65a of the protruding piece 65 Is used as the portion 61 of the restrained portion 6A. For example, as shown by a two-dot chain line in FIG. 19, the protruding piece 65 cuts out a part of the bottom surface portion 31 into the shape of the protruding piece, and the cut-out portion along the short side portion 31 c of the bottom surface portion 31 has a buffer structure. It is created by bending until the outer surface portion 38a of the portion 38 comes close to and confronts. The projecting piece 65 produced in this way generates a reaction force F2 that tries to recover in a direction away from the outer surface portion 38a of the buffer structure portion 38 (FIG. 19).

As shown in FIG. 22, the restrained portion 6 </ b> D constituted by the protruding piece 65 is a flap 28 that forms the restraining portion 4 </ b > A in the box body 2 when the cushioning material 3 is fitted into the housing space S <b> 1 of the box body 2. When the leading end portion 28c of the protruding piece 28b passes through the leading end portion 65a of the protruding piece 65, it is displaced above the leading end portion 65a of the protruding piece 65a by the reaction force F1. As a result, the leading end portion 65a of the protruding piece 65a faces the leading end portion 28c of the protruding piece 28b while being positioned on the bottom plate 21 side. Thereby, even if it tries to move to the direction C which takes out the buffer material 3, the front-end | tip part 65a of the protrusion piece 65 which is the to-be- restrained part 6D hits the front-end | tip part 28c in the protrusion part 28b of the flap 28 which is the to-be- stopped part 4A. Since the movement is restrained , the cushioning material 3 is not removed and remains in the accommodation space S1. When it is desired to take out the cushioning material 3 from the accommodation space S1, for example, the same operation as in the case of the restrained portion 6C described above is performed.

The distal end portion 28c of the projecting piece 28b constituting the portion 41 of the restraining portion 4 and the lower side portion 62a of the through hole 62 constituting the portion 61 of the restrained portion 6 (the lower side portion 64a of the opening 64 and the distal end portion 65a of the projecting piece 65). The same applies to the case of the edge portion (the portion indicated by the wavy line or the hatched portion) having the shape of wavy fine irregularities as illustrated in FIG. Form.

In this case, when moving in the direction C in which the cushioning material 3 is pulled out, the tip end portion 28c of the protruding piece 28b that is the portion 41 of the restraining portion 4 and the lower side portion 62a of the through hole 62 that is the portion 61 of the restrained portion 6 are provided. The frictional force at the time of abutment increases as compared with the case of the linear end edge portion, and it becomes difficult to be separated from each other, and the abutted state of both can be stably held. As a result, it is possible to stably obtain a state in which the cushioning material 3 is difficult to come off from the housing space S1 of the box body 2. Further, as illustrated in FIG. 21, the left and right side end portions 28d and 28e of the protruding piece 28 and the left and right side side portions 65c and 65d of the through-hole 65 are also brought into contact with each other when the tip end portion 28c and the lower side portion 62a abut against each other. In the case where they are in contact with each other, it is preferable that at least the edge portion to be contacted be formed in a shape having minute unevenness.

The cushioning material 3, as shown in FIG. 25 from FIG. 22, the buffer side portions 34 and 35 which the restraint 6A, 6B are formed (buffer structure 38 and 39) are stopping portions 4A, a 4B projecting An inclination preventing piece 301 that prevents the pieces 28b and 29b from being inclined in a direction D (a direction approaching the bottom surface portion 31) away from the tip portions 28c and 29c of the pieces 28b and 29b can be formed.

The inclination prevention pieces 301A to 301D illustrated in FIG. 22 and the like are provided in two each on the other buffer side surface portions 32 and 33 adjacent to the buffer side surface portions 34 and 35 on which the restrained portions 6A and 6B are formed (four in total). ) Formed. This inclination prevention piece 301 is used in a state where a U-shaped cut is made in a part of the buffer side surfaces 32 and 33 and the cut portion is bent so as to stand inward. It is formed so as to satisfy a condition that it can come into contact with the outer surface portions 38b, 39b inside the buffer structure portions 38, 39 in the buffer side portions 34, 35 when fitted into the housing space S1 of the box body 2. Specifically, the inclination preventing piece 301 has a cut portion (line) 302 that faces the side surface portions of the buffer structure portions 38 and 39 of the buffer side surface portion during use, and a bent portion (a portion that is not cut). It forms so that it may be located near the outer surface parts 38b and 39b inside the buffer structure parts 38 and 39 (refer FIG. 23).

The anti-tilt pieces 301 </ b> A to 301 </ b> D are bent in a state in which the cushioning material 3 is erected almost perpendicularly to the inner surfaces of the cushioning side surfaces 32 and 33 when the cushioning material 3 is fitted into the housing space S <b> 1 of the box body 2. When the 3 is fitted, the four buffer side surfaces 32 to 34 stand up with respect to the bottom surface portion 31, respectively, so that the buffer structure side portions 38 and 39 of the buffer side surface portions 34 and 35 have inner side surface portions 38 b and 39 b, respectively. Be in contact. Thus, as shown in FIG. 25 and the like, when the buffer structure portions 38 and 39 of the buffer side surface portions 34 and 35 are formed with a gap k with respect to the bottom surface portion 31, the buffer structure portions 38 and 39 have a gap k. There is a risk that it will be tilted in the direction D approaching the bottom surface portion 31 away from the side plate 24 of the box body 2 (in a state indicated by a two-dot chain line), but the tilt is prevented. That is, when the such buffer structure part 38 is inclined as described above, the lower side 62 of the through-hole 62 of the stop portion 6A formed in the buffer structure portion 38, and the like (portion 61 of the stop portion 6A) is, The box body 2 of the cushioning material 3 is brought into a state of not facing each other (or coming off when it is abutted) so as to abut away from the tip end portion 28a of the protruding piece 28 of the restraining portion 4A formed on the flap 28 of the side plate 24. There is a possibility that the mechanism for preventing detachment from the storage space S1 will not function. However, since the fall of the buffer structure portion 38 is prevented by the fall prevention piece 301A, the fear thereof is also eliminated.

As illustrated in FIG. 26, the fall prevention piece 301 is formed directly on the buffer structure portion 38 such as the buffer side face portion 34 on which the restrained portion 6 is formed, like the fall prevention piece 301E, or the fall prevention piece 301 It is also possible to form on the floor surface portion 31 facing the lower end portion 38c of the buffer structure portion 38 such as the buffer side surface portion 34 where the restrained portion 6 is formed as in 301G.

  The fall-preventing piece 301E is used by bending a part of the buffer structure portion 38 that is partially cut away from the inner outer surface portion 38b so as to be perpendicular to the inner outer surface portion 38b. In this case, when the buffer structure portion 38 is about to fall in the direction D approaching the bottom surface portion 31, the lower portion of the tip of the falling prevention piece 301 </ b> E comes into contact with the bottom surface portion 31 first to suppress the collapse. On the other hand, the fall prevention piece 301G is used by bending a part of the bottom surface portion 31 that is opposed to the lower end portion 38c of the buffer structure portion 38 into a state perpendicular to the floor surface portion 31 (bending). Is set so that the height corresponding to the gap k is a dimension). In this case, when the buffer structure portion 38 is about to fall in the direction D approaching the bottom surface portion 31, the lower end portion 38c comes into contact with the upper end portion of the fall prevention piece 301G to prevent the fall.

  As shown in FIGS. 27 and 28, lid members 53A and 53B for closing the vent holes 5A and 5B can be formed on the bottom surface portion 31 of the cushioning material 3.

  The lid members 53A and 53B are used as a lid by cutting a portion where the vent holes 5A and 5B of the bottom surface portion 31 are to be formed into a U shape and bending the cut portions upward. The openings that appear on the bottom surface 31 after lifting the cut portions become the vent holes 5A and 5B. For this reason, the lid members 53A and 53B are configured in the same shape and dimensions as the vent holes 5A and 5B. Further, in this case, the positions where the lid members 53A and 53B (ventilation holes 5A and 5B) are formed can be pushed downward when a part of the bottom of the package 100 comes into contact with the lid members 53A and 53B when being packed. Set it to a position.

  When the cover members 53A and 53B are formed, the cover members 53A and 53B keep the vent holes 5A and 5B opened when the buffer material 3 is fitted into the storage space S1 of the box body 2. For the reasons described above, the fitting can be easily performed. Further, when the packaged object 100 is stored in the storage space S2 of the cushioning material 3, the lid members 53A and 53B are previously displaced by hand to close the vent holes 5A and 5B, or as shown in FIG. 28b. As described above, the vents 5A and 5B are displaced by moving the housing 100 so that a part of the bottom of the package 100 touches the lid materials 53A and 53B and pushes down the lid materials 53A and 53B. Put it in a closed state. In the latter case, the operation of closing the lid members 53A and 53B is performed in conjunction with the storing operation of the member to be packed 100, so that the efficiency is high. In this way, the air holes 5A and 5B are placed in a state where the air permeability is almost lost.

On the other hand, at the time of unpacking, when the cushioning material 3 is moved in the direction of being pulled out from the accommodation space S1 of the box body 2, the vent holes 5A and 5B are in a state of being covered with the lid materials 53A and 53B. Outside air does not flow into the space E between the bottom surface portion 31 of the cushioning material 3 and the bottom plate 21 of the box body 2 from the vent holes 5A and 5B. For this reason, it is difficult to take out the buffer material 3 from the accommodation space S1 as described above (difficult to pull out when the vent holes 5A and 5B are not formed in the buffer material 3). Accordingly, the cushioning material 3 is not taken out from the accommodation space S1 of the box body 2 and tends to stay in the accommodation space S1. Incidentally, also at this time, the detachment preventing function by the restraining part 4 and the restrained part 6 works in the same manner, and the removal of the cushioning material 3 from the accommodation space S1 is also restrained by this function.

  The lid for closing the vent holes 5A and 5B may be prepared and applied as lid materials 54A and 54B separate from the cushioning material 3, as illustrated in FIG. When it is desired to take out the cushioning material 3 from the accommodation space S1, it can be performed after the necessary operations as described above are performed after the lid members 53 and 54 that block the vent holes 5A and 5B are moved or removed.

  Note that, as illustrated in FIG. 29, the shock-absorbing piece 301 and the lid member 53 (54) can be applied to the cushioning material 3 at the same time. In this case, the effect of the above-described fall prevention piece 301 and the effect of the lid member 53 can be obtained together, which is effective.

[Embodiment 2]
30 and 31 show a packaging box according to Embodiment 2, FIG. 30 shows a cushioning material constituting the packaging box, and FIG. 31 shows a cushioning material constituting the packaging box of the box body. The state of the main part when it fits in the accommodation space is shown. Below, the same code | symbol is attached | subjected about the component which is common in the packaging box which concerns on Embodiment 1 (a drawing is included), and description of the component is abbreviate | omitted except when it is required. The same applies to the following embodiments.

As the box body 2 constituting the packaging box 1 according to the second embodiment, the cushioning material 3 in the first embodiment (see FIGS. 2, 7, 8, etc.) is used in the same manner. For this reason, in the box body 2, as in the case of the first embodiment, the flaps 28 and 29 are formed with the protruding portions 28b and 29b that become the restraining portions 4A and 4b (FIG. 8 and the like). In addition, as a cushioning material constituting the packing box, as shown in FIG. 30, a structure (for example, polystyrene foam molding) prepared in a box shape with an upper portion opened in advance using a member having shock absorption (such as foam). Product).

  The cushioning material 30 includes a bottom surface portion 31 having a rectangular plane, and four cushioning side surface portions 32 to 35 formed so as to rise from the respective side portions of the bottom surface portion 31. This is a buffering structure that is used in a state of being inserted into the storage space S1 and existing between the box body 2 and the packaged object 100 stored in the storage space S1. The cushioning material 30 is manufactured by molding into a required shape using a foam member. For this reason, the bottom surface portion 31 and the buffer side surfaces 32 to 35 are provided with buffer performance by utilizing the shock absorption (depending on the thickness and shape) of the foam member itself. Moreover, the buffer structure part (protrusion part etc.) comprised on the inner surface of the bottom face part 31 and the four buffer side parts 32-35 based on conditions, such as a shape according to the external appearance shape of the to-be-packaged goods 100, a dimension, a position. ) Is formed. Furthermore, about the dimension etc. (except thickness) of the bottom face part 31 and the four buffer side parts 32 to 35, and the conditions of the bottom face part 31 and the four buffer side parts 32 to 35 of the cushioning material 3 in the first embodiment, It is almost the same.

  Further, the buffer material 30 also has vent holes 5C and 5D formed in the bottom surface portion 31 thereof. The vent holes 5C and 5D can be formed under the same conditions as the vent holes 5A and 5B in the first embodiment.

Further, also in the cushioning material 30, the third cushioning side surface portion 34 and the fourth cushioning side surface portion 35.
However, when the cushioning material 30 is fitted in the accommodation space S1 of the box body 2, the stoppers 4A and 4B formed on the third flap 28 and the fourth flap 29 of the box body 2 are opposed to each other. Therefore, when the cushioning material 30 is fitted into the side walls 34 and 35 in the housing space S1 of the box body 2, the side walls 34 and 35 are positioned on the bottom plate 21 side of the box body 2 so as to abut against the portions 41 of the stop portions 4A and 4B. A restrained portion 6E having a portion 61 that faces each other is formed.

  The to-be-restrained portion 6E is a structure portion (rectangular shape having a rectangular opening shape and an open top at the top of the outer surface portion 34a of the third side surface portion 34 and the fourth side surface portion 35 as viewed from the front. (Indented portions) 66 are respectively formed, and the lower side portions 66a of the rectangular indented portions 66 are used as the portions 61 facing the portions 41 of the restraining portions 4A and 4B.

The rectangular hollow portion 66 as the restrained portion 6E has a height h5 from the bottom surface portion 31 of the lower side portion 66a and an opening width w6 thereof that are the height h2 and the opening width w6 of the through-hole 62 and the like in the first embodiment. Are set to the same dimensions. In addition, the opening height h <b> 7 of the rectangular hollow portion 66 is set to a value (H−h <b> 2) obtained by subtracting the height h <b> 2 of the lower side portion 66 a of the hollow portion from the height H of the side plate 24. Since the opening width w6 of this recess portion 66 is set to a value wider than the width of the protruding pieces 28b and 29b as the restraining portions 4A and 4B, the tip portions of the protruding pieces 28b and 29b are the recessed portion 66. It is in the relationship which can be made to invade in (a hollow).

  When packing with the packaging box 1 to which the cushioning material 30 is applied, the cushioning material 30 is first fitted into the accommodation space S1 of the box body 2 as in the packaging box 1 according to the first embodiment. Keep it.

That is, after the flaps 28 and 29 in which the restraining portions 4A and 4B are formed on the box body 2 are folded so as to exist in the accommodation space S1 (see FIGS. 2 and 8b), the box body in that state The cushioning material 30 is fitted into the second accommodation space S1. At this time, the bottom surface portion 31 of the cushioning material 30 has the same shape as the bottom plate 21 of the box body 2 and the dimensions (long side and short side dimensions) have a slightly smaller relationship. Vent holes 5C and 5D are formed in the bottom portion 31. For this reason, the work of fitting the buffer material 30 into the housing space S1 of the box body 2 is the same as the case of the work of fitting the buffer material 3 in the first embodiment, and the bottom surface portion 31 of the buffer material 30 and the box body 2. This is easily performed without receiving the resistance of air in the space E between the bottom plate 21 and the bottom plate 21.

  Further, in the process of fitting the cushioning material 30 into the accommodation space S1 of the box body 2, the cushioning material 33 is fitted into the accommodation space S1 until the bottom surface portion 31 of the cushioning material 30 contacts the bottom plate 21 of the box body 2. When the tip portions 28c and 29c of the protruding pieces 28b and 29b of the flaps 28 and 29 are opposed to the recess portions 66 formed in the buffer side surfaces 34 and 35, respectively, they are in contact with the outer side surfaces 34a and 35a. From this state, the reaction force F enters the recessed space of the recessed portion 66.

As a result, as shown in FIG. 31, the lower side 66a of the recess 66 in the cushioning material 30 (the portion 61 in the restrained portion 6E) is the tip portions 28c and 29c ( restraint ) of the protruding pieces 28b and 29b of the flaps 28 and 29. It will be in the state which faced the part 41) in the parts 4A and 4B so as to be relatively positioned and abutted on the bottom plate 21 side of the box body 2. Thereby, the buffer material 30 is in a state of being fitted in the accommodation space S1 of the box body 2.

  The packing at this time is stored in the box main body 2 after the package object 100 is stored in the storage space S4 (FIG. 30) surrounded by the bottom surface portion 31 and the four buffer side surfaces 32 to 35 of the buffer material 30. This is completed by closing the first flap 26 and the second flap 27. Incidentally, the to-be-packaged object 100 packed in the packing box 1 is in a state in which the cushioning material 30 is interposed between the inner wall surface except the inner wall surface above the box body 2. For this reason, when the packaging box 1 receives an impact or the like from the outside at the time of transportation or the like, the impact is absorbed and buffered by the cushioning material 30, so that the portion to be packed 100 packed in the packaging box 1 is , It will be protected from such external impacts.

  On the other hand, when unpacking the packaging box 1, the unpacking work can be performed by reversing the steps of the packaging work described above for the packaging box 1.

  Among them, when the object to be packed 100 is grasped by hand and taken out from the housing space S1 of the packaging box 1 (actually the storage space S4 formed of the cushioning material 30), the cushioning material 30 is removed from the box body. Only the article 100 to be packed can be taken out from the storage space S4 by the cushioning material 30 while remaining in the second accommodation space S1.

That is, when the shock absorbing material 30 receives an external force that is moved in the direction C taken out from the housing space S1 of the box body 2, as shown in FIG. 31, the third and fourth shock absorbing side portions 34, The lower side portions 66a (the portions 61 of the restrained portions 6A and 6B) of the respective recessed portions 66 formed in the 35 are the tip portions 28c and 29c of the protruding pieces 28b and 29b formed on the flaps 28 and 29 of the box body 2 (see FIG. It will be in the state which faced against part 41) of stop part 4A, 4B. As a result, the lower surface portion 66a (part 61) of the recessed part 66 that is the restrained part 6E in the cushioning material 30 is replaced with the tip ends 28c and 29c (parts) of the protruding pieces 28b and 29b that are the restraining parts 4A and 4B in the box body 2. 41). As a result, the buffer material 30, the movement of the take-out direction C is restrained, is placed in a state of staying in the accommodation space S1 without being taken out from the accommodating space S1 of the box body 2.

  Thus, the unpacking operation of the packaging box 1 according to the second embodiment is completed. Particularly in the case of the packaging box 1 as well, the cushioning material 30 does not break during unpacking and is present in a state of being fitted in the accommodation space S1 of the box body 2, so that the packaging box according to Embodiment 1 As in the case of 1, the packaging box 1 can be reused.

When it is necessary to remove the cushioning material 30 from the housing space S1 of the box body 2 in the packing box 1, a plate-like member or the like is inserted into the gap between the side plate 24 and the recessed portion 66 of the box body 2, and the flaps 28, An operation is performed in which the protrusions 28b and 29b of 29 are pushed and displaced outward (in a direction approaching the side plates 24 and 25) against the reaction force F. As a result, the tip portions 28c and 29c of the projecting portions 28b and 29b that are the restraining portions 4A and 4B are not brought into contact with the lower side portion 66a of the recessed portion 66 that is the restrained portion 6E. It can be easily removed from the accommodation space S1 by moving it in the direction C to take out 30.

[Modification of Embodiment 2]
The restrained portion 6 formed on the cushioning side surface portion in the cushioning material 30 is not limited to the configuration (FIG. 30 and the like) such as the recess portion 66 (lower piece portion 62a) illustrated in the second embodiment. The configuration illustrated in FIG. 34 and the configuration illustrated in FIGS. 35 to 37 can also be applied. These configurations can be similarly applied to the restrained portion 6 formed on the fourth buffer side surface portion 35 disposed on the opposite side of the third buffer side surface portion 34.

The to-be- restrained portion 6G shown in FIGS. 32 to 34 is formed with a horizontal stepped portion 67 protruding outward from the outer surface portion 34a to the entire width of the side surface portion 34 at the lower portion of the outer surface portion 34a of the third buffer side surface portion 34. The step surface 67a of the step portion 67 is configured to be used as the portion 61 of the restrained portion 6G. The conditions for the formation position of the stepped surface 67a of the stepped portion 67 may be the same as the conditions for the formation position of the lower side portion 66a of the recessed portion 66 in the second embodiment, but may be different. About this level | step-difference part 67, you may handle as the shape which shaved off the upper part of the outer surface part 34a of the 3rd buffer side surface part 34, and formed the upper part into the hollow shape.

Moreover, as the restraining part 4 formed in a flap in the box body 2 that is paired with the restrained part 6G constituted by the stepped part 67, for example, the one shown in FIG. 33 or the like can be applied. The restraining portion 4E illustrated in FIG. 33 is formed as a full width flap 29e having a shape in which the full width w3 of the fourth flap 29 is cut at a height h2, and the leading end 29c serving as a free end of the full width flap 29e is restrained. This is configured to be used as the portion 41 of the portion 4E. The height h2 of the full width flap 29e is the same as the height h2 of the protruding portion 28b as the other restraining portion 4, but may be a different size. The configuration of the stop portion 4E can be similarly applied to the stop portion 4 formed on the third flap 28 on the side opposite to the fourth flap 29.

As shown in FIG. 34, the restrained portion 6G configured by the stepped portion 67 has a full width flap that forms the restraining portion 4E in the box body 2 when the cushioning material 30 is fitted into the accommodating space S1 of the box body 2. The state where the tip end portion 28c in 28e enters a state above the stepped surface 67a of the stepped portion 67, so that the stepped surface 67a of the stepped portion 67 faces the tipped end portion 28c while being positioned on the bottom plate 21 side. become. Thereby, even if it is going to move to the direction C which takes out the shock absorbing material 30, the level | step difference surface 67a of the level | step-difference part 67 which is the to-be- suppressed part 6F hits the front-end | tip part 28c in the full width flap 28e which is the stop part 4E, and the movement is stopped. Therefore, the cushioning material 30 is not removed and remains in the accommodation space S1. In addition, in the to-be- restrained portion 6G configured by the stepped portion 67, a range in which the distal end portion 28c of the full width flap 28e is displaced by the outer surface portion 34a of the buffer side surface portion 34 existing above the stepped surface 67a is regulated. There is no possibility of displacement to a position off the step surface 67a of the step portion 67, and the state where the tip portion 28c and the step surface 67a face each other is stably maintained.

  On the other hand, when it is desired to take out the buffer material 30 from the accommodation space S1, for example, the following operation is performed. That is, by inserting a thin member or a plate-like material into the gap between the outer surface portion 34a and the full width flap 28e in the third buffer side surface portion 34, and displacing the full width flap 28e so as to approach the side plate 24 of the box body 2, After the tip 28c is shifted to a position where it does not hit the stepped surface 67a of the stepped portion 67, the cushioning material 30 may be moved in the takeout direction C facing upward. In addition, as a structure which cancels | releases the front-end | tip part 28c of the full width flap 28e in the box main body 2 from the contact | abutting state with the level | step difference surface 67a of the level | step-difference part of the shock absorbing material 30, it is also possible to employ | adopt the following structure. That is, as shown by a two-dot chain line in FIGS. 32 and 34, when a through portion (recess or through hole) 34 m is formed at the center of the third buffer side surface portion 34 and the buffer material 30 is removed, As shown by the dotted line arrow, a finger or a member is inserted from the inside of the cushioning material 30 in a state where the penetrating portion 34m is passed through, and the full width flap 28e is pushed away from the stepped surface 67a of the stepped portion to release it. It is. This configuration can be similarly applied to the cushioning material 30 shown in FIG.

The to-be- restrained part 6H shown in FIGS. 35 to 37 is formed with a horizontal projection part 68 projecting outward from the outer part 34a to the center part of the side part 34 at the lower part of the outer part 34a of the third buffer side part 34. In addition, the upper surface 68a of the protruding portion 68 is configured to be used as the portion 61 of the restrained portion 6H. The conditions for the formation position of the upper step surface 68a of the protruding portion 68 are the same as the conditions for the formation position of the lower side portion 66a of the depression 66 in the second embodiment (or the formation position of the step surface 67a of the stepped portion 67). Good, but it doesn't matter.

Moreover, as the restraining part 4 formed in a flap in the box body 2 that is paired with the restrained part 6H constituted by the protruding part 68, for example, the one shown in FIG. 36 or the like can be applied. The restraining portion 4F illustrated in FIG. 36 is recessed so that the center portion of the width w4 having a value of about 1/3 of the entire width w3 of the fourth flap 29 becomes the height h2 from the upper edge 25a of the side plate 25. It is formed as a hollow flap 29f obtained by cutting it into an oval shape, and a tip end portion 29c serving as a free end of the hollow flap 29f is used as the portion 41 of the restraining portion 4E. Two protruding flap portions 29g and 29g having a height h8 higher than the height h2 of the depression flap 29f are formed on both the left and right sides of the depression flap 29f. The height h2 of the hollow flap 29f is the same as the height h2 of the protruding portion 28b as the other restraining portion 4, but may be a different size. The configuration of the stop portion 4F can be similarly applied to the stop portion 4 formed on the third flap 28 opposite to the fourth flap 29.

As shown in FIG. 37, the restrained portion 6H constituted by the protruding portion 68 is a recessed flap that forms the restraining portion 4F in the box body 2 when the cushioning material 30 is fitted into the housing space S1 of the box body 2. The front end portion 28c in 28f enters a state above the upper step surface 68a of the protrusion 68, and faces the front end portion 28c in a state where the upper step surface 68a of the protrusion 68 is positioned on the bottom plate 21 side. become. Thereby, even if it tries to move to the direction C which takes out the buffer material 30, the upper stage surface 68a of the protrusion part 68 which is the to-be- restrained part 6H hits the front-end | tip part 28c in the hollow flap 28f which is the stop part 4F, and the movement is stopped. Therefore, the cushioning material 30 is not removed and remains in the accommodation space S1. Further, in the restrained portion 6H constituted by the protruding portion 68, the range in which the distal end portion 28c of the recessed flap 28f is displaced by the outer surface portion 34a of the buffer side surface portion 34 existing above the upper step surface 68a is regulated. There is no risk of displacement to a position deviating from the upper step surface 68a of the protrusion 68, and the state in which the tip 28c and the upper step surface 68a face each other is stably maintained. On the other hand, when it is desired to take out the cushioning material 30 from the accommodation space S1, for example, the same operation as in the case of forming the restraining portion 4E and the restrained portion 6G may be performed.

  And also in the packaging box which concerns on Embodiment 2, the cover material which plugs up the air vent mentioned in the modification of Embodiment 1 can be employ | adopted similarly. In this case, the cover member is prepared as a separate cover member from the buffer member 30.

[Embodiment 3]
38 and 39 show the packaging box according to the third embodiment, FIG. 38 shows a cushioning material constituting the packaging box, and FIG. 39 shows the storage space of the box body constituting the packaging box. The state when the cushioning material is fitted is shown as a plan view.

When the cushioning material 3B shown in FIG. 38 is compared with the cushioning material 3 (FIG. 9 and the like) in the first embodiment, the cushioning structure portion 38 of the third cushioning side surface portion 34 and the cushioning structure portion 39 of the fourth cushioning side surface portion 35 are provided. Is not formed (not formed on the other buffer side surfaces 32 and 33), and is different in that lid members 53A and 53B for closing the vent holes 5A and 5B are formed on the bottom surface portion 31. The rest of the configuration is the same.

Further, the box body 2B used in combination with the cushioning material 3B also has a third side plate 24 and a fourth side plate as shown in FIG. 39 when compared with the box body 2 (FIG. 7 and the like) in the first embodiment. without forming the stop portion 4 on each flap 28, 29 of 25 (nor formed in the other of the side plates 22, 23), constituting the flaps 28, 29 which does not form the stop portion 4 as a normal inner lid in the box body 2B In other respects, the configuration is the same.

  Next, the state in the main process of the packing operation using the packing box 1 according to Embodiment 3 will be described.

  First, also in the packaging box 1, as shown in FIG. 39, it is set as the state which inserted the shock absorbing material 3B in the accommodation space S1 of the box main body 2B. Specifically, the cushioning material 3B is inserted into the accommodation space S1 of the box body 2B in a state where the four flaps 26 to 29 are bent in the opening direction. About the cover materials 53A and 53B in the buffer material 3B, the vent hole 5 is not blocked.

  At this time, the bottom surface portion 31 of the cushioning material 3B has the same shape as the bottom plate 21 of the box body 2B and the dimensions (long side and short side dimensions) are slightly smaller, but also in this cushioning material 3B, Vent holes 5A and 5B are formed in the bottom portion 31. For this reason, the work of fitting the cushioning material 3B into the housing space S1 of the box body 2B is similar to the work of fitting the cushioning material 3 in the first embodiment, and the bottom surface 31 of the cushioning material 3B and the box body 2B. This is easily performed without receiving the resistance of air in the space E between the bottom plate 21 and the bottom plate 21. Thereby, the buffer material 3B stops when the bottom surface portion 31 is fitted to such an extent that the bottom surface portion 31 contacts the bottom plate 21 of the box body 2B, and the fitting operation is completed.

  By the steps so far, as shown in FIG. 39, the packaging box 1 in a state in which the cushioning material 3B is fitted in the accommodation space S1 of the box body 2B is obtained. The packaging box 1 at this time is surrounded by the four buffer side surfaces 32 to 35 in a state where the cushioning material 3B stands in the accommodation space S1 of the box body 2 as in the case of the packaging box according to the embodiment. The newly created storage space S2 is newly formed.

  Subsequently, the article to be packed 100 is stored in the storage space S2 of the packaging box 1. When storing the object to be packed 100, the lid members 53A and 53B are previously displaced by hand to close the vent holes 5A and 5B, or the object to be packed 100 is stored by an operation of storing the object to be packed 100. A part of the bottom of 100 touches the lid members 53A and 53B to displace the lid members 53A and 53B so as to close the vent holes 5A and 5B (see FIG. 28b). In this manner, the vent holes 5A and 5B are placed in a state in which the air permeability is almost lost when the storage of the article to be packed 100 is completed.

  After the storage of the packaging box 1 is completed, the buffer structure portion 36 in the first buffer side surface portion 32 of the buffer material 3B is bent inward at the bent portion 32b, so that the side plate 22 (actually, the buffer material) The side plate portion 32a) of the first buffer side surface portion 32 of 3B and the packaged object 100 are interposed.

  Subsequently, in the packing box 1, the third and fourth flaps 28 and 29, which are inner lids of the box body 2B, are bent at the upper end edges 24a and 25a of the third side plate 24 and the fourth side plate 25 to be packed 100. After closing to cover the upper portions at both ends in the longitudinal direction, the fourth flap 27, which is also the inner lid, is bent at the upper edge 23a of the second side plate 23 to cover the entire upper portion of the object to be packed 100. So that it is closed. Thereafter, the first flap 26, which is the outer lid of the box body 2 </ b> B, is folded at the upper end edge 22 a of the first side plate 22 so as to be overlaid on the second flap 27. Finally, the insertion piece 26b of the first flap 26 of the box body 2B is brought into a state of being inserted into the insertion notch 27b of the second flap 27. Thereby, the packing operation is completed.

  As in the case of the packing box according to the first embodiment, the article 100 packed in the packing box 1 is in a state in which the cushioning material 3B is interposed between all the inner wall surfaces of the box body 2B. . For this reason, when the packaging box 1 receives an impact or the like from the outside during transportation or the like, the impact is absorbed and buffered by the buffer material 3B, so that the packaged part 100 is protected from the external impact. become.

  On the other hand, when unpacking the packaging box 1, the unpacking work can be performed by reversing the steps of the packaging work described above for the packaging box 1.

  Among them, when the object to be packed 100 is grasped by hand and taken out from the housing space S1 of the packaging box 1 (actually the storage space S2 formed of the cushioning material 3B), the cushioning material 3B is removed from the box body. Only the article 100 to be packed can be taken out from the storage space S4 by the cushioning material 30 while remaining in the 2B accommodation space S1.

  This is presumably due to the following reason. First, when the cushioning material 3B is moved in the direction of being pulled out from the housing space S1 of the box body 2B during unpacking, the vent holes 5A and 5B are blocked by the lid materials 53A and 53B. Therefore, outside air does not flow into the space E between the bottom surface portion 31 of the cushioning material 3B and the bottom plate 21 of the box body 2B from the vent holes 5A and 5B. For this reason, as described above (the difficulty in pulling out when the vent holes 5A and 5B are not formed in the cushioning material 3), the removal of the cushioning material 3B from the accommodation space S1 is subjected to resistance by the air in the space E. It becomes difficult. Accordingly, the cushioning material 3B is less likely to be taken out from the housing space S1 of the box body 2B as compared to the cushioning material configured to unpack the ventilation holes 5A and 5B without being closed. It becomes easy to stay in the accommodation space S1.

  Therefore, when unpacking the packaging box 1, it is possible to take out only the article 100 from the storage space S2 by the buffer material 3B while keeping the buffer material 3B in the storage space S1 of the box body 2B. At this time, there is no possibility that the buffer material 3B is damaged. Further, even after the object to be packed 100 is taken out (including after the object to be packed 100 is taken out when the object to be packed 100 and the buffer material 3B are packed in a state where they are not in contact with each other), the buffering is performed. The material 3B is kept in a state of being attached to the accommodation space S1 of the box body 2B and does not come off.

  Incidentally, when it is necessary to remove the cushioning material 3B from the housing space S1 of the box body 2B in the packing box 1, the lid members 53A, 53B on the bottom surface portion 31 of the cushioning material 3B are displaced to the open state to open the vent holes 5A, The buffer material 3B may be taken out of the accommodation space S1 after the operation of allowing 5B to be vented. Thereby, the buffer material 3B can be easily removed from the accommodation space S1.

  Note that the lid that closes the vent holes 5A and 5B may be prepared and applied as lid materials 54A and 54B separate from the cushioning material 3B, as illustrated in FIG.

[Other embodiments]
In each of the above-described embodiments, an example in which the rectangular bottom plate 21 is provided as the box body 2 has been described, but the bottom plate 21 having a polygon such as a triangle, another quadrangle, a quadrilateral, a pentagon, or a hexagon is provided. It is also possible to apply. In this case, as the cushioning material 3, a material whose bottom surface portion 31 has the same shape as the polygon of the bottom plate 21 of the box body 2 is used.

  In each of the above-described embodiments, the number of the restraining portions 4 and the restrained portions 6 is not limited to two, and may be one or three or more. About the number, it can be set as the number which subtracted 1 from the total number of the sides in the polygon of the baseplate 21 or the bottom face part 31, for example. In addition, the form, number, etc. of the part 41 of the restraining part 4 and the part 61 of the restrained part 6 can be changed.

  In each of the above-described embodiments, the number, shape, formation position, and the like of the vent holes 5 formed in the bottom surface portion of the cushioning material 3 can be changed as appropriate.

  Further, the packaging box 1 is not limited to the case where the box body 2 and the cushioning material 3 are manufactured using a corrugated board, and other board materials (plastic corrugated board, plastic board, foam, etc.) are used alone or appropriately. You may employ | adopt the structure produced by using in combination.

  Finally, the type of the object to be packed 100 accommodated in the packaging box 1 is not particularly limited. For this reason, the shape, size, and the like of the entire packaging box 1 (the box body 2 and the cushioning material 3) are set according to the shape, size, and the like of the packaged object 100.

DESCRIPTION OF SYMBOLS 1 ... Packing box 2 ... Box main body 3,30 ... Buffer material 4 ... Control part 5 ... Vent hole 6 ... Controlled part 21 ... Bottom plate 21a-21d ... Each side part 22-25 ... Side plate 22a-25a ... Side plate Upper edge 26-29 ... flap (bending plate)
28 ... Projection piece (restraint part)
28a ... tip part (part of stop part)
31 ... Bottom part 31a-31d ... Each side part 32-35 of the bottom part ... Buffer side part 41 ... Site 53, 54 of stop part ... Lid (lid)
61: Site 62, 63 of the restrained part, through-hole (restrained part, recessed structure part)
62a, 63a ... lower side (part of the restrained part; part of the inner wall)
100 ... Packed object 301 ... Tilt prevention piece S1 ... Accommodating space

Claims (6)

A polygonal bottom plate, a plurality of side plates rising from each side of the bottom plate, and a plurality of bent plates that are bent at the upper end edges of the side plates, respectively, and a packaged object is accommodated in a space surrounded by the bottom plate and the side plates. A box body used as a housing space;
The bottom surface of the same polygon as the bottom plate of the box body and a plurality of buffer side surfaces rising from the respective sides of the bottom surface part, and is fitted into the housing space of the box body to be placed in the box body and the housing space. A cushioning material present between the items to be packed;
A vent is formed in the bottom surface of the cushioning material,
A lid for closing the vent hole;
The at least one bent plate of the box body is formed with a restraining portion having a portion that is bent into the accommodation space of the box body and faces away from the bottom plate of the box body,
When the cushioning material is fitted into the storage space of the box body on the cushioning side surface portion of the cushioning material that faces the restraining portion formed on the at least one bent plate , A restrained part having a portion facing and located on the bottom plate side of the box body is formed so as to strike ,
The packaging is characterized in that the lid is formed on the bottom surface portion of the cushioning material so as to be displaced by being pushed by an object to be packed when accommodated in the accommodating space of the box body and closing the vent hole. box. The restraining portion is a tip portion of a portion of the bent plate that is bent into a housing space of the box body,
The packing box according to claim 1, wherein the restrained portion is a recessed or projecting structure portion having a portion facing the front end portion of the bent plate.   The depressed shaped restrained portion is a through hole that penetrates in the buffer side surface portion of the cushioning material, and a part of the inner wall portion of the through hole is formed as a portion facing the tip portion of the restrained portion. The packaging box according to claim 2. The cushioning material is a structure that is used in a state where the cushioning side surface portion is bent and raised at each side portion of the bottom surface portion, respectively.
An anti-tilt piece for preventing the buffer side surface portion forming the restrained portion from tilting in a direction away from the stop portion, the buffer side surface portion, another buffer side surface portion of the buffer material adjacent to the buffer side surface portion, or The packaging box of any one of Claims 1 thru | or 3 currently formed in the said bottom face part. A polygonal bottom plate, a plurality of side plates rising from each side of the bottom plate, and a plurality of bent plates that are bent at the upper end edges of the side plates, respectively, and a packaged object is accommodated in a space surrounded by the bottom plate and the side plates. A box body used as a housing space;
The bottom surface of the same polygon as the bottom plate of the box body and a plurality of buffer side surfaces rising from the respective sides of the bottom surface part, and is fitted into the housing space of the box body to be placed in the box body and the housing space. A cushioning material present between the items to be packed;
A vent is formed in the bottom surface of the cushioning material,
A lid for closing the vent hole;
Packing the lid, characterized in that it is formed on the bottom surface of the cushioning material so as to be displaced to a state of closing the vent hole by being pushed by the object to be packed as it is accommodated in the accommodating space of the box body box. The packaging box according to claim 1, wherein the cushioning material is assembled by folding cardboard .

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